Roofing material



UNITED STATES PATENT OFFICE.

PHILIP CAREY, OF CINCINNATI, OHIO.

ROOFING MAQ'SI'ERIAL.

SPECIFICATION forming part of Letters Patent No. 402,559, dated May 7, 1889.

' Application filed December 22, 1888. Serial No. 294,378. (No specimens.)

To all whom it may concern/.-

' provement in Roofing Material, of which the following is a full, clear, and exact description.

My invention relates to an improvement in roofing material; and it consists of the roofingfelt ordinarily used for that purpose saturated in a mixture consisting of petroleum, lamp-black, and asphaltum,which mixture is used as a substitute for the ordinary coal-tar. Coal-tanwhich is generally used, is obj ectionable for several reasons-among them, its cost; also the fact that after it has been exposed to the Weather for some time it becomes brittle and loses its vitality. The heavier petroleum-oils may be rendered practically odorless by distillation. With this distilled oil I mix a sufficient amount of lamp-black to bring it to about the consistency of liquid tar and add a small quantity of asphalt-um, rosin, or" other similar substance, which produces a stiffening and drying effect. The fel having been saturated or passed through this compound, is passed between rollers in the usual way, to press in the mixture and remove the surplus, when it may be rolled into rolls for use, or may be put through the machine for uniting several thicknesses and producing a makes them objectionable to the trade, be-

when it is desired to unite several sheets, the greasy surface preyents' the perfect union and leaves them liable to part. The lamp-black used, as described, leaves. the surface of the felt dry and free from the objections named.

If mixed with the oil, as described, it is so light that there is no tendency to settle at the bottom, as heavier substances are liable to do; but, on the contrary, there is a chemical union between the oil and the lamp-black forming a homogeneous compound. The proportions I use are about one-half or five-tenths of the oil, four-tenths of lamp-black, and one-tenth asphaltum.

I do not limit myself to these proportions exactly, as the amount of lamp-black differs with different oils, my discovery relating especially to the use of lamp-black with oil for the purposes described. This preparation is easily handled and easily applied, is inex pensive, and very much superior in its result to any other compound that I know of. WVith slight modifications it maybe used for a paving compound, the modifications depending upon the climate in which it is to be used, as is well known, the requirement for ,hot and cold climates Varying in all such compounds.

Rosin possesses some of the qualities of as phaltum as a drying and stiffening ingredient, and may be used as a substitute for or mixed with the asphaltum. The use of either is simply for the purpose described, and Ido not limit myself to any particular substance for that purpose.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is-

A roofing or paving material consisting of the abovedescribed compound of distilled petroleum, lamp-black, and asphaltum, or its equivalent, combined substantially in the proportions and for the purpose described.

PHILIP CAREY.

Witnesses:

ALERED M. ALLEN, GEORGE HEIDMAN. 

